Every Arduino tutorial here is built and tested on real hardware — no untested copy-paste code. You’ll find sensor integrations, motor control, displays, RFID, and complete project builds, each with a wiring diagram and sketch. The boards below are the same pre-soldered Nanos and Megas used in the guides.
Shop the parts used in these tutorials
Arduino 49E Hall Effect Sensor: Read Analog and Digital
Build an Arduino 49E linear Hall sensor reader to monitor analog magnetic field strength and a digital threshold output for contactless detection...
Maker Component Cabinet Resistor Kits: Find Parts Fast
Build a labeled drawer component cabinet to organize 1900+ resistors, capacitors, and transistors so you find values fast and avoid duplicates with...
ESP32 SD Card: Local CSV Data Logging Setup
Build an ESP32 SD card CSV data logger with optional DS3231 timestamps for reliable offline sensor logging when WiFi drops, using ShillehTek...
Arduino Nano EM4100 RFID: EEPROM multi-card door lock
Build an Arduino Nano EM4100 125 kHz RFID door lock with EEPROM multi-card access and a relay-driven electric strike using parts from...
XL4015 Buck Converter: Adjustable Bench PSU Build
Build an XL4015 5A buck-converter bench power supply with CC/CV adjustment for precise 1.25-36V regulated output, using parts from ShillehTek.
Arduino Nano + ACS712: Measure AC/DC Current Up to 30A
Build an Arduino Nano + ACS712 current sensor meter to measure AC/DC current up to 30A, with zero-offset calibration and RMS sampling,...
Arduino Nano KY-018: Build a Light-Following Robot
Build an Arduino Nano light-following robot using two KY-018 photoresistors and an L298N for differential steering, with easy wiring and calibration from...
Arduino YF-S201 Water Flow Sensor: Measure L/min
Build an Arduino YF-S201 water flow meter to measure liters per minute and total liters for dosing, monitoring, and leak alerts with...
Arduino Nano DRV8825: Smooth NEMA 17 Motor Control
Wire an Arduino Nano to a DRV8825 to drive a NEMA 17 with correct current limit and 1/32 microstepping for smoother, quieter...
XIAO nRF52840 BME280: Build a BLE Temp Sensor
Build a Seeed XIAO nRF52840 BLE temperature/humidity sensor with a BME280, then learn the setup and low-power approach for long battery life...
Seeeduino XIAO SAMD21 USB-HID: Build a Macro Numpad
Build a Seeeduino XIAO SAMD21 USB-HID macro numpad with a 4x4 keypad, then type shortcuts and text snippets reliably over USB with...
Arduino 4-Channel Relay Module: Reverse a DC Motor
Build a high-current Arduino DC motor reverser using a 4-channel relay module with safe interlock wiring, ideal for actuators, doors, and pumps...